gdb/

gdb/
	Fix ia64 shadowing of breakpoints in multiple slots of a single bundle.
	* ia64-tdep.c (ia64_memory_insert_breakpoint): New call
	of make_show_memory_breakpoints_cleanup with parameter 0.  Move the
	reading of SHADOW_CONTENTS to this memory state point of code.  Update
	comment for the memory re-read.

gdb/testsuite/
	* gdb.base/breakpoint-shadow.exp (Second breakpoint placed): Initialize
	$bpt2address.
	(Second breakpoint address is valid on ia64)
	(Third breakpoint on ia64 in the Second breakpoint's bundle): New.